The causes of frequent fetal movement at night mainly include physiological factors, pathological factors, drug factors and so on. 1. Physiological factors: Fetal movement is usually affected by the biological clock, and its frequency will increase at 8-1 o’clock in the evening. So at night compared to daytime, fetal movement will be more frequent, usually a normal physiological phenomenon. If pregnant women eat more at night, so that the fetus is well nourished, can also appear at night frequent fetal movement. 2. Pathological factors: pregnant women suffering from infectious diseases, severe anemia, etc., will make the body consume more oxygen, while the oxygen content in the blood will be reduced, thus causing frequent fetal movement. When the pregnant woman has a fever, it will make the body’s metabolism faster, which will also lead to frequent fetal movement at night. 3. Drugs: If you are not taking proper medication such as oxytocin, ergonovine maleate and other drugs that make the uterus contract, it can also lead to frequent fetal movements. Clinical frequent nighttime fetal movement can be caused by different factors, it is recommended to identify the causes and treat the symptoms, if there are uncomfortable symptoms, consult a doctor in time.